Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando Tom Watson (5/6) venceu o Senior British Open, quem venceu o Senior PGA Championship?
 ###Tabelas: CREATE TABLE wins_over_top-10_players_per_season (wins_over_top-10_players_per_season_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Rank INT, Event VARCHAR, Surface VARCHAR, Score VARCHAR) CREATE TABLE internationals (internationals_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Score VARCHAR, Result VARCHAR, Competition VARCHAR) CREATE TABLE subnet_and_host_counts (subnet_and_host_counts_id AUTO_INCREMENT PRIMARY KEY, Prefix size VARCHAR, Network mask VARCHAR, Available subnets INT, Usable hosts per subnet INT, Total usable hosts INT) CREATE TABLE sligo_leitrim_and_northern_counties_railway (sligo_leitrim_and_northern_counties_railway_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Type VARCHAR, Names VARCHAR, Quantity made VARCHAR, Manufacturer VARCHAR, Date made VARCHAR) CREATE TABLE senior_major_winners (senior_major_winners_id AUTO_INCREMENT PRIMARY KEY, Year INT, Senior PGA Championship VARCHAR, The Tradition VARCHAR, Senior Players Championship VARCHAR, U.S. Senior Open VARCHAR, Senior British Open VARCHAR)  
SELECT Senior PGA Championship FROM senior_major_winners WHERE Senior British Open = tom watson (5/6)